If you fire up the App Store right now you’ll be able to download Hook for iPhone and iPad without spending a dime. This iOS puzzle game typically sells for $0.99 and boasts a 5-star rating from hundreds of reviewers. Beyond sheer entertainment value, you may actually get a bit of relaxation by playing Hook:
HOOK is a minimal, relaxing, puzzle game. It is more of a game-like experience than a challenge. No menus, no achievements, just you and a puzzle. Player is surrounded by calming sounds and music. Playing “HOOK” is a meditative and calming experience, rarely found in mobile gaming.